1.

Tribbles

The Klingons' most hated enemy and the antithesis of everything that Worf is. They are fluffy and cuddly, whereas Worf is grumpy and abrasive. And those little critters go nuts whenever a Klingon, especially Worf, is too close.

0 points - added 9 years ago by ArtofWar11 -

2.

Quark

Of all Ferengi, Worf hates Quark the most. Come to think of it, a lot of people hate Quark. But Worf's hatred for Quark surpasses everyone else's, save probably Odo's.

0 points - added 9 years ago by ArtofWar11 -

3.

Smiling

Worf almost never smiles. He is perpetually cranky, and therefore, he does not like smiling. And the few times he does smile, it's kind of weird.

0 points - added 9 years ago by ArtofWar11 -

4.

Jadzia's Behavior.

As his par'Mach'kai, Worf does not like Jadzia doing a lot of things to which she is accustomed to doing, like playing Tongo, hanging out with Ferengi, etc. A whole B plot of an episode is devoted to this.

0 points - added 9 years ago by ArtofWar11 -

5.

Dishonor

Like any good Klingon, Worf hates dishonor. So he often tries to prevent himself from being dishonored.